Calvin and Hobbes by Bill Watterson for June 28, 1988

With Calvin and Hobbes, it is extremely difficult to tell if Hobbes is an actual intelligent entity, or just a stuffed animal. Others see him as a stuffed animal, but when he is alone with Calvin, things happen that would not be possible if he were only a stuffed animal. For example, when Calvin gets tied to the chair, and can’t get loose. It is possible to tie one’s self to a chair, but is nearly impossible to make it inescapable without someone else involved.

This is one of the reasons I think Hobbes is real, and is just extremely good at convincing the non-Calvin types that he is only a stuffed tiger.